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Finding the Fourth Proportional to 328,999.60, 494,017.80 and 189,031.60

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Solution

The fourth proportional to 328,999.60, 494,017.80 and 189,031.60 is: 283,845.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,999.60 : 494,017.80 = 189,031.60 : x
  2. Step 2: Convert to fraction form
    328,999.60/494,017.80 = 189,031.60/x
  3. Step 3: Cross multiply
    328,999.60x = 494,017.80 × 189,031.60
  4. Step 4: Simplify right side
    328,999.60x = 93,384,975,162.48
  5. Step 5: Solve for x
    x = 93,384,975,162.48/328,999.60
  6. Step 6: Final answer
    x = 283,845.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.